4 passengers @ 200 lbs. (91 kg.) each, 85% annual airport temperatures, LRC speed, 85% annual winds, ISA en-route and NBAA IFR 200 nm reserves. Great circle distance + 3%
Payload X Range Takeoff @ Sea Level, ISA. LRC speed, ISA en-route, no wind, NBAA IFR Reserves with 200 nm alternate, 2 crew @ 200 lb (91 kg) each.
Range x Takeoff Field Length (TOFL)